4518 Datasheet, PDF (13/160 Pages) Renesas Technology Corp – SINGLE-CHIP 4-BIT CMOS MICROCOMPUTER

4518 Group
IAP3 instruction
Register A
A0
A0
OP3A instruction
DQ
T
External 0 interrupt
Key-on wakeup input
Timer 1 count start synchronous circuit input
Period measurement circuit input
(Note 3)
External 0 interrupt circuit
IAP3 instruction
Register A
A1
A1
OP3A instruction
DQ
T
External 1 interrupt
Key-on wakeup input
Timer 3 count start synchronous circuit input
(Note 3)
External 1 interrupt circuit
(Note 1)
P30/INT0
(Note 2)
(Note 1)
P31/INT1
(Note 2)
Notes 1:
This symbol represents a parasitic diode on the port.
2: Applied potential to these ports must be VDD or less.
3: As for details, refer to the external interrupt circuit structure.
Port block diagram (5)
Rev.3.01 2005.06.15 page 13 of 157
REJ03B0008-0301